Silt Wattle

Our Settlement Test report provides practical recommendations for silt control design and, if applicable, flocculant selection. We offer a video or phone consultation as part of the service to discuss the results and appropriate treatment measures.

Samples should arrive with us within 72 hours of the sampling. Please inform your Frog contact when samples are dispatched so we can book them into our laboratory’s workflow on arrival.

Place labelled samples in a strong box or bag, enclose our Chain of Custody sample detail form, and attach our address form to the outside.

Notifying your contact at Frog ahead of sending as it helps ensure samples are expected and booked into our laboratory.

No. Use fresh rainwater or local surface water to reflect site conditions. Avoid stagnant water.

Either a 2 litre water sample, a 500 g subsoil sample with 2 litres of local freshwater for mixing, or a  2 litre composite sample of silty water. Please label all items clearly to help us identify your samples. Contact us first so we can get you booked in with our laboratory team.

Settlement Tests are recommended at both pre-construction phase to help plan ahead and budget for silt pollution risks, and during construction to monitor changes to dynamic sites and address changes needed to existing water treatment systems. We recommend this test is carried out on all sites.